Safety razor



NOV. 3 1931. I o v s-r 1,830,576

SAFETY RAZOR Filed April 9, 1931 Patented Nov. 3, 1931 PATENT; OFFICEERIK G. TOB-NKVIST, OF NEW YORK, N. Y.

SAFETY RAZOR Application filed April 9, 1931. Serial No. 528,815.

This invention relates to the hoe type of razors in which the bladeguard is ermanently assembled with the handle an a cap plate has a pairof hooks pro'ecting down through the razor bladeand lade guard, whilethe handle is partly rotatable in order to engage a pair of inclinedflanges thereon with the cap plate hooks or disengage them therefrom.

The main object of my invention is to render the assembling of a razorand renewal of the blade thereof instantaneous and convenient, and toobsolesce threads and similar structures of fine and easily worn detail.Another object is to provide a razor of the type indicated with a handleof such construction that a mere twist of the wrist will either assembleand lock the whole razor into a rigid unit, or release the blade andblade guard at will.

A further object is to provide a blade, when desired, which has fouredges and corresponding holding slots which renders said bladetwice asuseful as the usual two edge types, and readily shifted for using eitherpair of opposite edges.

' Still another object is to provide a razor of this class which comesapart into merely I two parts, aside from the blade, which par-'ticularl renders the handling and replacement 0 the blade very easy.

Other objects and the various advantageous features inherent in thenovel structure involved in my invention will appear more fully indetail as this specification proceeds.

\ In the accompanying drawings, Fig. 1 is a perspective new of a razormade according to my invention and held a little above the line ofvision.

Fig. 2 is a similar view with the handle turned into released ositionwherein the razor is ready to be ta en apart.

Fig. 3 is a view of the razor of Fig. 2, as

' seen directly from below.

Fi 4 is a view of the handle and blade guar as seen from above, afterthe blade and cap plate have been lifted off.

Fig. 5 is a view of the cap plate and blade as seen from below. a

" Fig. 6 is a view of the cap plate alone.

Fig. 7 is a view of the blade guard and its stud which normally projectsinto the handle.

8 is a view of the handle alone.

Fig. 9 is a transverse section of Fig. 1 on line 18,18.

Fig. 10 is a similar section of a modification.

Fig. 11 is a view of the razor blade alone.-

Fig. 12 illustrates another form of the blade.

Throughout the views, the same reference numerals indicate the same orcorresponding parts. v

In well known forms of hoe type razors it is customary to unscrew thehandle proper from a threaded stud projecting through the blade guardand blade from the cap plate, and this both consumes time and entailsrap.- id wear of the threads, and is inconvenient in addition. It wastherefore proposed to eliminate threads, while retaining the lockingeffect of a thread, and also designed to include the aforesaid objectsto furnish a basis for the 1present invention. '15

Hence, in t e practice of my invention, a hollow handle. 1 supports ablade guard 2 which is rigidly secured to a stud or shank 11 normallyextending down into the handle. The blade guard has the usual teeth 8upon its two opposite main edges and is adapted to bear a razor blade 5upon the same while a cap plate 3 is adapted to hold the blade down onthe guard. Upon the cap plate are located a pair of facing hooks 1, 4which project down through the blade and through a I pair of slots 10,10 in the guard plate.

The handle proper is provided with a pair of similar inclined flanges 6,6 which are spaced at their ends from each other b a pair of clearancespaces or gaps 7, 7. he hooks of cap plate 3 normally enga e the handleflanges 6, 6 but during assembly of the razor for blade'replacement, thehandle may be turned so that gaps 7, 7 correspond 95 with slots 10, 10in the guard, when the hooks will be free to be withdrawn from or thrustthrough slots 10, 10. If the blade 5 and capplate 3 have been placedupon the blade guard 2, and hooks 4, 4 passed down through guard 1Mslots 10, 10 and into gaps 7 7 on the handle the latter, being rotatableupon the guard shank 11, it is but necessary to turn the handle a littlewhile holding the guard and cap-plate, and the inclined flanges 6, 6will catch under hooks 4, 4 and quickly bind with the same locking theparts together.

In order to release the blade and cap-plate, it is only necessary toturn the handle a little in the reverse direction till the gaps 7, 7again register with guard slots 10, 10 and the hooks are no longerengaged when they may be freely withdrawn through the ard slots and thecap plate thus lifted o The inclined flanges 6, 6 therefore act coarselyin the same manner as a thread, except for the gaps and hold the hooksnormally very tightly.

The handle-and ard are preferably permanently assemble so as toaccompany each other in all manipulations of the razor, and for thisreason the stud or shank 11 has a slot .12 and the handle 1 a pin 13corresponding This holds the parts in assembly as before and also allowspartial rotation of the handle.

However, the blade 5 may preferably have four cutting edges 21, 21,21,21 and in order topermit the books 4, 4 to pass through the blade in anyposition which will re 'ster two of the ed es with the rows 8 of t eguard. On the ot er hand a blade 14 may have but 'two cutting edges 22,22 and the hook slots 19, 19 which located the blade and serve to holdit when assembled upon the razor. In the case of the first blade, thetwo unused edges which are adjacent to the ends of the ard and cap-plateare protected from mury through contact with said parts and also fromcoming in contact with all outside ob-' 'ects by first making the guardand cap-plate longer than the blade, at both ends, and then providingclearance grooves 9, 9 in the guard ends and 20, 20 in the cap-plateends respectively.

'The razor blade 5 is practically square,

terior projection in said handle to limit rota tion thereof and retainsaid shank and guard in assembly therewith, and a cap-plate having meansnormally projecting through said blade and guard and arranged to beengageable by said inclined handle flange, whereby to retain said razorin assembled condition.

2. A razor including the combination, with a blade and a guard, of ashank rigid upon said guard, a handle partly rotatable upon said shankand provided with an inclined flange thereon, means for limiting therotation of said handle upon the shank and for retaining the same inassembled association therewith, and a cap plate provided with meansnormally projecting through said blade and guard and arranged to be enaged by said inclined handle ange, where y to retain said razor inassembled condition.

3. A razor including the combination, with a'blade and a guard, of ashank ri id upon said guard, a handle partly rotata le upon said shankand provided with'a pair of inclined flanges thereon, means for limitingthe rotation of said handle upon said handle upon said shank disposedwithin the general out- .line of said handle and also serving to retainthe shank in assembly with said handle, and a cap plate having pluralmeans normally projecting through said blade and guard and arranged tobe individually engaged by said inclined handle flanges, whereby toretain as a whole said razor in assembled condition.

Signed at 132 Nassau Street, in the county of New York and State of NewYork, this 7th day of April, A. D. 1931.

ERIK G. TORNKVIST.

while blade 14 need not be-so, for a more nar- Having now fullydescribed my invention,-

I claim 1. A razor includin the combinatlon, with a blade guard and alade, of a shank rigid upon said guard, a handle partly rotatable uponsaid shank and provided with an inclined flange thereon, there being aslot in said guard shank and a corresponding in-

